Doesn't look like too bad of shape. I would drive the GTP until fully hot and see how the trans. shifts, see if you notice any cooling issues, etc.. Everything else he listed is minimal to fix.

And personally, I'd rather work on the 3800 in the GTP than the F-body. I've worked on a 99 Camaro w/ the 3800 and you can't reach half the motor from the top! FWD wins this time.